Core covering machine



Aug' 14, 1934- R. E. GETCHELL v1,970,228

CORE COVERING MACHINE Filed March 12, 1951 8 sheetssheet 1 A TTORNE Y.

CORE COVERING MACHINE i Filed March 12, 1951' 8 sheets-sheet 2 INVENTOR,/Yay/fza/zd 62M HMH/@f ATTORNEY.

Ag. 14, 1934. IR. E. GETCHELI. 1,970,228

CORE COVERING MACHINE Filed March l2, 1931 8 Sheets-Sheet 5 in w ,w ff@fff armi/ w Tt ,ik W

' lNVENToR, [Pay/ww ficd A TTORNE Y.

Aug 14, 1934- R. E. GETcHl-:LL 1,970,228

CORE COVERING MACHINE Filed March 12. 1931 s sheets-sheet 4 v w l W @yfflf/ l N VEN TOR, ahy/fwd i'. 2mg/Z,

A TTORNE Y.

ug. 14, 1934. R E, GETCHELL 1,970,228

CORE COVERING MACHINE Filed March l2, 1951 8 Sheets-Sheet 5 A TTORNE Y.

Aug. 14, 1934.

GORE COVERING MACHINE Filed March l2, 1931 R. E. GETcHELL 8 sheets-shet6 y YM@ ATTORNEY.

Alilgkl4, 1934. R, E GETCHELL I 1,970,228

CORE COVERING MACHINE Filed March l2, 1931 8 Sheets-Sheet '7 Wwf@ ATTORNE Y.

Aug. 14, 1934. R. E. GETCHELL 1,970,228

CORE COVERING MACHINE Filed March 12, 1951 8 Sheets-Sheet 8 BY l wit/f YATTORNEY.

Patented Ang". l, lg3d wat Lamaze v come oovERiNa Mao Raymond E.Getchell, Holyoke, Mass., assigner to B. F. Perkins & Son, Inc.,Holyoke, Mass., a corporation oit-Massachusetts Application March 12,

25 Clai.

This invention relates to improvements in apparatus for uniting aplurality of threads, cords or the like by a winding or wrappingoperation.

According to the novel features of this invention,`there is provided anapparatus of the class described which in its broad aspect is adapted towind or cover a central core member with an outer covering or coverings.I'he central core may'consist of fibrous material or of more or lessrigid material such as wire or the like. The core may also be ofextensible or flexible material and a covering may be i applied theretoin one or more layers or servings. 'I'he coverings may in any caseinclude fibrous or extensible material or even relatively more rigidmaterial, such as a metal thread or the like.

The principal objects of the invention are directed to the provision, inan apparatus of the class described, of novel features of constructionand arrangement of parts whereby the apparatus may not only operate athigh speeds to obtain large production and favorably eifect themanufacturing costs of material produced thereby, but at the same timethe apparatus is simple in construction so as to not only contribute toits emciency but facilitate ease injthe operation thereof.

The machine as will later appear embodies various novel details ofconstruction which cooperate with one another in producing a novel v 3Qapparatus. The advantages thereof will be more fully hereinafterreferred to in connection with the following description of thepreferred form of the invention which for purposes of disclosure will beshown in the accompanying drawings F wherein:

Fig. l is a transverse sectional elevational view u through the machineof the invention showing -the relation of certain of the variouscomponent parts thereof.

Fig. 2 is a side elevational view of one side of the machine at asomewhat largerscale than that of Fig. l, with parts intermediate theends omitted.

Fig. 3 is a partial sectional View taken on the line 3-3 of Fig. 1, withthe parts shown at a larger scale than in Fig. 1.

Fig. 4 is a partial transverse sectional elevational view showing theparts at one side only of the machine and is taken on the line 4-44ofFig. 2.

Fig. 5 is a sectional elevation view at a large scale, taken through oneof the motor driven spindle assemblies and showing certain of the otherparts of the machine in relation thereto.

Fig. A6 is an end elevational view, with parts in 1931, serial No.521,940

(ci. 11i- 34) section, of the right hand end of the machine shown inFig. 2.

Fig. 7 is a somewhat enlarged elevational' view looking at the left-handend of the machine shown in Fig. 2.

Fig. 8 is a plan view showing certain details of construction and istaken on the line 8-8 of Fig. 2.'

Fig. 9 is a plan view with certain of the parts in section and is takenon the line 9-9 of Fig. 4.

Fig. 10 is an end elevational view of the parts shown in Fig. 9, withcertain parts in section, and

Fig. 11 is a diagrammatic side elevational view of the machine showingcertain frame parts to illustrate the relative positions of said parts.

Referring now to the drawings in detail, the novel features of theinvention will be fully described.

In describing the apparatus or machine of the invention, reference willbe made to a core element which is served or covered by winding acovering element therearound. It will be-under stood that the core mayconsist of fibrous thread or yarn, a stretchable or resilient element,or a more rigid relatively non-stretchable member, and that the coveringmay be a yarn or thread of fibrous material or some more stretchablematerial or even a metallic ribbon or the like.

In a general way the separate units or parts of the apparatus or machineo1 the invention are carried by a supporting structure which includesend frames 2, intermediate frames 4 and subframes 6, which are disposedvertically in a spaced relation. The end frames and intermediate frames`are and the sub-frames may be extended to rest upon the floor forsupporting the structure. These frames are suitably xed to lowerlongitudinally extending rods 8, rods l0 thereabove, a lower rail 12, anupper rail 14, a bar 16, and upper rods 18.

Motor driven spindle assemblies are mounted in spaced relation on themembers 12 and 14 at both sides of the machine. They are spaced apart onthe dot-dash lines in Fig. 11 and so arranged that the motor drivenspindle assemblies of the lower rail are in alignment with the motordriven spindles of the upper rail. In this way the spindles one abovethe other constitute what may be `cal1ed a pair of spindles. Each pairwith its associated parts may be termed a complete core covering unit.

The motor driven spindles will now be described with particularreference to Fig. 5.

Housings 26 are provided the rear side of which carry tongues 28 foritting within grooves through the rails and engage threaded openings iin the tongues so as to securely clamp the housings to the rails andhold them in correct relative position and against displacement.-

Caps 29 are suitably secured tothe housings 26 and spindles 30 arejournalled in the housings and caps by means of suitable bearings suchas ball bearings 32 and 34. Rotors 36 are carried by the spindles andstators 38 are held within the housings. These constitute motors torotate the spindles when electrical current is supplied thereto.

In order to obtain the desired eii'iciency in a machine'of this kind itis necessary to construct the motor elements to rotate the spindles atvery high speed, and anti-friction bearings are provided for theirdesirable characteristics. Yieldable washers 39 and 40 of cork or thelike are disposed around and between the spindle bearings and thehousing and cap and function to dampen and absorb vibrations and therebyeliminate noise and excessive wear.

The spindles 30 are hollow whereby a core C may pass upwardlytherethrough and discs or anges 46 are carried at the lower end thereofbelow the caps. Levers 50 4are pivoted at 52 to ears 54 of the capsandhave diverging arms 56 which extend around and actuate collars 58slidable on extensions 60 of the caps. These carry friction shoes in theform of washers 62 and the members 58 are urged downwardly by means ofsprings 64 disposed between` the caps and colf lars. These levers 50, aswill later appear, are arranged to hold the collars 58 in an uppernonbraking position and when released or actuated the springs 64 forcethe collars down so that they bear on the members 46. The members 58 arenon-rotatable so that when they bear on the members 46 there is a`braking action to stop the rotation of the spindles. It will beunderstood that the tension of the spring may be varied to vary thebraking action, all as may be desired.

Drivers 70 above the housings are rotated by and with the spindles 30and upwardly extending driving lugs '72 are receivable in slots 74 atthe lower sides of spools 76. The spools '76 are a-dapted to slip overthe spindles 30 and may carry the materials with which it is desired toserve or cover the cores. In the drawings a covering element isrepresented by W.

Upwardly extending conduits are provided between the rails 12 and 14 ata point intermediate adjacent pairs of spindles and are connected attheir lower ends to the longitudinally extending conduits 82. Theseconduits carry wires for supplying current to the spindle motors andreceptacles 84 on the conduits are adapted to receive the connectingleads 86 ofthe motors. It is desired that each vertical pipe or conduitsupply two adjacent pairs of motors on each side of the machine andswitch boxes-88 on the lower ends of the vertical conduits 80 areprovided with four switches 90. On each side of the boxes there are twoswitches, one switch to control current to one pair of motors and theadjacent switch for controlling current to the adjacent pair of motors.

A lower platform 90 extends longitudinally of the machine just above thefloor and is provided with studs or pins 92 which are receivable inopenings of caps or spools 94 of core material. The core material C iscarried upwardly through tension devices of usual form which are locatedbelow the lowermost spindle and then thIOugh the pairs of spindles.

28 of the rails, 12 and 14.l Bolts 30' extend `ends of the spindles.

Studs are xed to the rails 12 and 14 and support separate plates 112thereabove. 'Ihese plates 112 are provided with suitable openings 114and are preferably located adjacent the upper by means of screws 118 tothe upper side of the Guide plates 116 are fixed plates 112 and carryannular guideways 126 disposed concentrically with respect to the axisof rotation of the spindles. Rings or travelers, 122 are rotatable onthe guideways as best shown in Fig. 5. Other guide or ring members 123are removably carried by the upper ends of the spindles and haveenlarged outer ends or guideways 124 around which rings 126 travel.

These members 123 are preferably removable from the spindles and areheld thereon by friction so that they are rotated by and with thespindles while at the same time the rings 126 may' rotate relativethereto.

Covering material W is led from the spools 76 through the travelers orrings 122 and 126 on to the core C. As the spindles rotate the spoolsthe travelers guide the covering material directly on to the core.

It will be noted that the upper rings 126 are closely adjacent the coreand that the parts are so arranged that the covering W from the rings122 to the core C is guided in a substantially straight line. Thesetravelers function to give to the win-ding material the desired tension,but guide the covering material in such a way that accurate winding ispossible. This is due to the fact that by means of the co-operatingrings and their annular guideways the covering material is preventedfrom whipping inthe rotation thereof at the high speed at which thespindles are operated.

Guides 102 are xed to rods 130 oscillatable at inner marginal sides ofthe plates 112. These guides carry at their outer ends bushings 103,

which may be of porcelain or the like and which are provided withcentral axial openings therethrough for receiving the cores. Levers 134are aixed to the lower ends of the rods and carry studs 138 at theirouter ends and are also provided at their other end with spaced stopportions 140.

Springs 142 are connected between studs 138 and other studs 142depending from the plates. 'I'he parts are so arranged that the guides102 may swing between non-guiding positions at the left of the spindlesas in Fig. 8 to guiding positions exactly above the spindles as shown atthe right in Fig. 8. Since the levers 134 are limited in swingingmovements by the stop portions 140, the levers and consequently the rods130 are held in one position or the other by action of the springs.

Operating rods 146 are provided for each pair of spindles and arevertically disposed at the rear of said pairs of spindles. upand down inthe plates. 12 and 14. Members 148 `adjacent the lower ends of the rodshave outwardly extending 1ingers150 arranged to engage and operate theswitches 90 of the switch boxes 88. As the rods are reciprocated up ordown, the switches are moved by them between on and of! positions andthereby they control the current supply to the motors. I

Collars 152 xed to the rods are arranged to bear on the inner ends 51ofthe brake levers 5D.

When therods 146 are moved upwardly the' springs of the brake mechanismof the motors are allowed to operate the disks 58 and apply the brakesto the anges of the spindles. When the rods are moved downwardly thelevers 50 are These rods are movable l tov revenge acted upon to holdthe members 58 in their upper non-braking position. The rods 146 aremoved up and down by the operator by means of levers 160.

These levers 160 (see Figs. 9 and l0) are pivoted for swinging movementon pins 163 extending from block 164 aliixed to the under side of theupper rail 14. Inner bifurcated ends 147 o the levers 166 partlysurround the rods 146 between upper and lower collars 166 and 168carried by the rods 146. Detents 170 in the rail have their lower endsprojecting from the rail 14 and are spring pressed downwardly by springs172. "llhey are held against rotative movements by means ofscrews 174which have their inner ends in slots 176 of the detents. Cam or pawlmembers 180 associated with each of the levers are arranged to bear onthe spring pressed detents to force the detents inwardly accordingly asthe levers 160 are swung between upper and lower positions. The ends ofthe detents are so arranged as to bear on the cams 180 to yeldingly holdthe levers 160 at either their upper or lower position, all as shownmore particularly in Fig. 10.

The parts are so arranged that there is an operating rod 146 for eachpair. Likewise av rod operating lever 160 is provided for each rod 146with the operating levers for adjacent pairs of spindles being disposedside byside between said pairs of spindles. With a lever 160 in itsupper position the brake mechanisms for a pair of spindles are held outof frictional contact so that the spindles are free to rotate while themember 148 holds a switch 90 in an on position so that current issupplied to the motors. When a lever 160 is moved from its upper to itslower position a switch is moved to an olf position and simultaneouslytherewith the brakes are applied to stop rotation of the motor spindles.

Ilongitudinally extending shafts 180 are rotatable above the uppermostspindles at either side of the machine and carry winding up drums 182.These drums may be covered with some more or less yieldable materialsuch as rubber, cork or the like, the desirability of which will dependmore or less upon the nature of the work being performed by the machine.

Cross bars 183 are carried by the upper ends of the previously describedrods 146-and have upwardly extending rods l186 at their upper ends towhich are secured arm members 188. These have slots 190 at the outerends thereof which receive trunnions 192 of take-up spools 194.

As the rods 146 are raised and lowered the take-up spools 194 are movedtowards and away from the rolls 182 by the arms188. The covered coresare led from the upper guide 102 to and through guides 200 carried bytraversing guide bars 202. These members 202 move back and forth to leadthe covered core back and forth or from end to end o the take-up spools194.

While thespindles are in operation for covering the core, it is desiredthat the take-up spools 194 rest on the drums 182 whereby they arerotated. The parts are so arranged that when the rods 146 are in theirlower position the take-up spools will be allowed to rest on and berotated by the drums. When, however, the rods 146 are elevated to movethe switches sto an off-position and to apply the brakes to the spindlesthe take-up spools are simultaneously moved away from the drum so thatthe rotation of the spool is arrested and the upward travel of the coreis stopped.

The shafts 180 are driven by means. of the mechanism now to bedescribed. A motor 210 carried by frame 2 at the right hand of themachine has a worm 212 aflixed to ashaft 214 thereof which meshes withworm gears 216 rotatable in a gear box 218. Idler gears 220 'mesh withgears 222 and 224 associated with the gears 216 and with gears 230 onthe ends of shafts 180. It will be noticed 'that the gear 222 is ofdifferent sizethan the gear 224. This is to illustrate that variousgears may be employed so that the shafts 180 may be rotated at alike ordiierent speeds.

The traversing bars 202 are reciprocated back and forth by means of themechanism now to be described, with particular reference to Figs. 2 and7.

One of the shafts 180 carries a gear 240 in mesh withY the gear 242rotatable on a stud 244. A pinion 246 associated with the gear 242meshes with a. gear 24S-so as to rotate a shaft 250 journalled in ahousing 252 which is carried by the frame 2 at the left-hand end of themachine.

Levers 260 are pivoted on a rod 262 of brackets 264 extending from theleft-hand frame 2 and are provided with rolls 266. Springs 268 connectedbetween the levers 260 and the members 264 urge the levers to the rightso that the said rolls 266 ride upon the outer face of a cam 270 xed tothe shaft 250.

The rails previously mentioned are guided for reciprocating movements bymeans of guide rolls 280 carried by the frames and on their left-handend carry rods 282 on which are adjustable memybers 286 having slots 288in the lower ends'thereof.u Boltsv290' adjustable along said lslots passthrough similar slots in the upper ends of the levers 260. In this waythe said levers are connected to the members 286 and as the levers 260are oscillated back and forth by action of the cam the traverse bars 202are also reciprocated back and forth for guiding the covered core to thetake-up spool.

A shelf 290 extends along the machine at the upper side thereof and issuitably arranged for receiving take-up spools and other material.

In the operation of the apparatus as many pairs of the motor-drivenspindles may be employed as may be desired. Each pair is independentlyoperable so that various core-covering operations may be simultaneouslycarried on. And as has been explained, the take-up shaft 180 on one sideof themachine may be driven at a different speed than that at the otherside.

Core material is carried upwardly from the supply thereofthrough thetension devices 100. through the spindles and guides, and finallythrough the guides 200 on to the take-up spools. Spools of coveringmaterial are placed on the different spindles and strands thereof areled in each case through the travelers 122 and 126 Any one of the levers160 may be moved from a lower inoperative position, thereby releasingthe brakes and moving current supply switch to an on position and at thesame time lowering the take-up spool on to the take-up drum. In this waythe covering material is rotated by the spindle so as to be wrapped orserved around the core in an even accurate manner. If for any reason itis desired to stop the operation of any particular pair of spindles theoperating lever 160 associated with said spindles may be depressed tooperate the switch to an oi position, apply vthe brakes and elevate thetake-up spools above the drum. In this way not only is the windingoperation arrested, but an upward movement of the core is likewisearrested so that in the case of breakage of either the core, or coveringelement, a minimum of material is wasted.

The guides102 are oscillatable between guiding and non-guiding positionsand are yieldingly held in either of said positions to facilitate easymanipulation of the core and covering elements preparatory to a windingoperation. Likewise the `'levers 160 are yieldingly held in operativeand inoperative positions and are readily movable from one position toanother. -The machine is characterized by independently operable unitsand is easily and readily manipulated according to the will.of theoperator.

The shafts 180 may be driven at any desired speed by selecting theproper gears. This is important because it is thereby possible to takeup the covered core at any predetermined rate relative to the speed ofthe spindles. Therefore it is possible to apply the covering material atany desired number of turns per inch, all to the end that various electsmay be brought about thus adapting the machine for the covering orserving of various materials with coverings of various kinds. A

Having described the invention in the form at present preferred what Inow desire to claim and secure by Letters Patent oi the United Statesis:

1. The combination in a machine of the class described of, a housing andcap having a spindle rotatable therein, a brake disc on said spindle, a

brake member slidable on a part of said cap towards and away from saiddisc, means to urge said member towards said disc, a lever acting onsaid member and yieldable means to hold said lever in operative andinoperative positions.

2. The combination in a machine of the class described of, a spindlerotatable on a vertical axis, brake mechanism associated therewith, amember for actuating the same, a rotatable takeup drum above saidspindle, a rod slidable up and down, arms on the upper end of said rodprovided with slots for receiving trunnions of a takeup spool and alever for actuating said rod whereby the brake actuating member is movedup and down and the take-up spool is moved towards and away from saiddrum, means acting on said lever to yieldingly hold thesame againstmovement. v l

3. The combination in a machine of the class describedof, spindlesrotatable on vertical axes, brake mechanism associated therewith,members for actuating the same, a rotatable take-up drum above saidspindle, a rod slidable up and down, arms on the upper end of said rodprovided with slots for receiving trunnions of a take-up spool and alever for actuating said rod whereby the brake actuating members aremoved up and down and the take-up spool is moved towards and away fromsaid drum, means acting on said lever to yieldingly hold the sameagainst movement.

4. The combination in a machine of the class described of, a spindlerotatable on a vertical axis, brake mechanism associated therewithhaving means for urging the same into braking engagement, a member tohold said braking mechanism against a braking action connected to a rodslidable up and down, a take-up drum above said spindle, spaced armsconnected to said rod for rotatably supporting a take-up spool so thatit 'may engage or move away from said drum as the rod is moved up ordown and an operating lever for said rod, and means for yieldinglyholding said lever against movement.

5. The combination in a machine of the class described of, a motordriven spindle, a switch included in a circuit to said motor, brakemechanism associated with said spindle, means urging the same intobraking engagement, a lever to hold said mechanism out of brakingengagement, an operating rod slidable up and ldown connected to saidlever, a take-up drum, arms on said rod rotatably receiving a take-upspool for engaging said drum, a lever actuating said rod and meanscarried thereby for actuating said switch, all adapted and arrangedwhereby the said switch, brake mechanism and take-upspool aresimultaneously acted upon accordingly as the rod is moved up or down.

6. The combination in a machine of the class described of, rotatablespindles one above Athe other, starting and stopping mechanism thereforincluding movable actuating parts, a rotatable take-up drum forcontacting with a spool,l a movable operatingv member for supporting aspool, connections between said member and actuating parts whereby thespool is moved towards and away from the drum and the actuating memberis moved as the operating member is moved.

7. 'I'he combination in a machine of the class described of, a spindlerotatable on a vertical axis, brake mechanism -associated therewith, amember for actuating the same, a winding up drum above said spindle, areciprocable rod, connections between said rod and member whereby thelatter is actuated by the former, means on saidrod for supporting atake-up spool adapted and arranged to move said spool towards and awayfrom said drum, means to yieldingly holdthe actuating parts in certainpositions` and means to hold said operating member in certain positions.

8. A machine for successively applying helical windings of yarn to acore comprising in combination, a pair of hollow spindles, independentmeans for rapidly rotating each of said hollow spindles at a.predetermined number of revolutions and in opposite directions, meansfor drawing a core to be covered successively through each of saidhollow spindles, independent brake means each including an operatingmember for quickly stopping the rotation of each hollow spindle, andmeans for controlling the operation of the machine acting on said'operating members whereby the drawing of the core through the pair ofhollow spindles and therotation of the hollow spindles may besubstantially simultaneously started or stopped.

9. A machine for successively applying helical windings of yarn to acore comprising in combination, a pair of hollow spindles, independentmeans for rapidly rotating each of said hollow spindles at apredetermined number of revolutions and in opposite directions, meansfor draw- Ving a core to be covered successively through each of said'hollow spindles, independent brake means each including an Yoperatingmember for quickly stopping the rotation of each hollow spindle, andmeans for controlling the operation of the machine acting on saidoperating members whereby the drawing of the core through the pair ofhollow spindles and the rotation of the hollow spindles may besubstantially simultaneously started or stopped, said hollow spindlesbeing each constructed to receive hollow yarn packages adjacent an endthereof.

10. A machine for successively applying helical windings of yarn to acore comprising in combination, a pair of hollow spindles, independentmeans infrange at .a predetermined number oi revolutions and in oppositedirections, means for drawing a core to be covered successively througheach of said hollow spindles, independent brake means each including anoperating member for quickly stopping the rotation of each hollowspindle, and means for controlling the operation of the machine actingon said operating members whereby the drawing of the core through thepair of hollow spindles and the rotation of the hollow spindles may besubstantially simultaneously started or stopped, said means for drawinga core through the spindles being constructed to move the core at asubstantially uniform rate.

11. A machine for successively applying helical windings of yarn to acore comprising in combination, a pair of hollow spindles,.independentmeans for rapidly rotating each of said hollow spindles at apredetermined number of revolutions and in opposite directions, meansfor drawing a core to be covered successively through each of saidhollow spindles, independent brake means each including an operatingmember for quickly stopping the rotation of each hollow spindle, andmeans for controlling the operation of the machine acting on saidoperating members whereby the drawing of the core through the pair ofhollow spindles and the rotation of the hollow spindles may besubstantially simultaneously started or stopped, said hollow spindlesbeing disposed in approximate axial alignment, and a guide located inclose proximity to the delivery end of each hollow spindle. p

12. A machine for successively applying helical windings of yarn to acore comprising in combination, a pair of hollow spindles, independentmeans for rapidly rotating each of said hollow spindles at apredetermined number of revolutions and in opposite directions, meansfor drawing a core to be covered successively through each of saidvhollow spindles, independent brake means' for quickly stopping therotation of each hollow spindle, and means for controlling the operationof the machine whereby the drawing of the core through the pair ofhollow spindles and the rotation of the hollow spindles may besubstantially simultaneously vstarted or stopped, said hollow spindlesbeing disposed in approximate axial alignment, a guide substantially.coaxial with said hollow spindles in close proximity to the deliveryend thereof, and` means ypermitting said guides to be shifted to anon-axial position. 13. 1n a machine for helically winding lyar about acore, a winding unit comprising in combination, a hollow spindle, anelectric motor for rotating said hollow spindle the rotor of which motoris carried by the hollow spindle adjacent one end thereof, the hollowspindle having an end projecting beyond the motor upon which a yarnpackage may be mounted, a stationary traveler ring and traveler locatedin proximity to the end of said hollow spindle remote from la. In amachine for helically wing yarn j about a core, a winding unitcomprising in combination, a hollow spindle, an electric motor forrotating said hollow spindle the rotor of which motor is carried by thehollow spindle adjacent one end thereof, the hollow spindle having anend projecting beyond the motor upon which a yarn package may bemounted, a stationary Y traveler ring and traveler located in proximityto the end of said hollow spindle remote from said electric motor, saidelectric motor having a housing for substantially completely enclosingit, means for drawing the core through the hollow spindle at asubstantially uniform rate, and braking mechanism for quickly stoppingthe rotation of the hollow spindle comprising a rotating element securedto the hollowqspindle and ashoe element secured against rotation to saidhousing but shiftable relative thereto for engagement with said rotatingelement, and means for shifting the shoe element to halt the operationof the hollow spindle, said rotating element and said shoe element beingdisposed concentrically of thev axis of said hollow spindle.

15. In a machine for helically winding yarn about a core, a winding unitcomprising in combination, a hollow spindle, an electric motor forrotating said hollow spindle, a rotor of which matar is carried by thehollow spindle adjacent one end thereof, the hollow spindle having anend projecting beyond the motor upon which a yarn package may bemounted, a stationary traveler ring and traveler located in proximity tothe end of said hollow spindle remote from said electric motor, saidelectric motor having a housing for substantially completely enclosingit, means for drawing the core through the hollow spindle at a,substantially uniform rate, and braking mechanism for quickly stoppingthe rotation of the hollow spindle comprising an element non-rotatablerelative to spindle and a shoe element non-rotatable relative to saidhousing, the said elements being relatively shiftable into and out ofbraking engagement and means for shifting the same to halt the operationof the spindle and to permit it to operate.

16. The combination in a machine of the class described of, a housingenclosing a motor, a spindle rotated by said motor, a brake element onsaid spindle, a cooperating brake lelement nonrotatable on said housingand slidable towards and away from said first-named element, means tourge the same towards said first-named element, a member acting on saidsecond-named brake element in opposition to said means for urging thesame towards the other element.

17. The combination in a machine of the class described of, a housingenclosing a motor, a spindle rotated by said motor, a brake element onsaid spindle, a cooperating brake element non-- rotatable onsaid'housing and slidable towards and'away from said rst-named element,means to urge the same towards said )first-named element, a memberacting on said second-named brake element in opposition to said meansurging the same towards the other element and means to hold said memberin operative and inoperative positions.

18. The combination in a machine of the class described of, a spindlerotatable on a certain axis, brake mechanism associated therewith, amember for actuating the same, a' movable operating member, meansthereon for rotatably receiving a take-up spool, a take-up drum, amember for actuating said operating member whereby the ne f will

iid@

brake actuating member is operated and the A take-up spool is movedtowards and away from said drum accordingly as the operating member ismoved.

19. The combination in a machine of the class described of, a spindlerotatable on a certain axis,

brakemechanism associated therewith, a member for actuating the same, amovable operating about 'a core, a winding unit comprising in com`bination, a hollow spindle, an electric motor for rotating said hollowspindle the rotor of which is associated with an end portion of saidspindle, the hollow spindle havingv an end projecting beyond the motorupon which a yarn package may be mounted, means for drawing a corethrough said spindle at a substantially uniform rate, a core guidelocated in close proximity to the delivery end of said hollow spindle,annular guideways adjacent the delivery end of the spindle and travelersmovable therearound for guiding yarn from a package on said spindle ontoa core at a point between said core guide and the delivery end of saidspindle.

21. In a machine for helicallywinding yarn about a core, a winding unitcomprising in combination, a hollow spindle, an electric motor forrotating said hollow spindle the rotor of which is associated with anend portion of said spindle, the hollow spindle having an end projectingbe- 'yond the motor upon which a'yarn package may be mounted, means fordrawing a core through said spindle at a substantially uniform rate, acore guide located in close proximity to the delivery end of said hollowspindle, annular guideways adjacent the delivery end of the-spindle andtravelers movable therearound for guiding yarnfrom a package on saidspindle onto a core at a point between said core guide and the deliveryend of said spindle, the said guideways being located adjacent thedelivery end of the spindle and a yarn package on said spindle.

22. In a machine for helically winding yarn about a core, a winding unitcomprising in combination, a hollow spindle, an electric motor forrotating said hollow spindle the rotor of which is associated with anend portion of said spindle, the hollow spindle having an end projecting-be- -yond the motor upon which a yarn package may ways adjacent thedelivery end of thespindle and travelers movable therearound for guidingyam from a package on said spindle onto a core at a point between saidcore guide and the delivery end of said spindle, the said guidewaysbeing of relatively different diameters. Y

23. In a machine for helically winding yarn about a core, a winding unitcomprising in combination, a hollow spindle, an electric'motor forrotating said hollow spindle the rotor of which is associated with anend portion of said spindle,

the hollow spindle having an end projecting beyond the motor upon whicha yarn package may be mounted, means for drawing a core through saidspindle at a substantially uniform rate, a

core guide located in close proximity to the delivery end of said hollowspindle, annular guideways adjacent the delivery end. of the spindle andtravelers movable therearound for guiding yarn from a package on saidspindle onto a core at a point between said core guide and the deliveryend of said spindle, the said guideways being disposed one above theother and being of relatively dilerent diameters.

24. In a machine for helically winding yarn about a core, a winding unitcomprising in combination, a hollow spindle, an electric motor forrotating said hollow spindle the rotor of which is associated with anend portion of said spindle, the hollow spindle having an end projectingbeyond the motor upon which a yarn package may be mounted, means fordrawing a core through said spindle at a substantially uniform rate, acore guide located in close proximity to the delivery end of said hollowspindle, annular guideways adjacent the delivery end of the spindle andtravelers movable therearound for guiding yarn from a package on saidspindle onto a core at a point between said core guide and the deliveryend of said spindle, the said guideways being disposed one above theother and the upper one being of less diameter than the lower one.

25. In a machine for helically winding yarn about a core, a winding unitcomprising in combination, a hollow spindle, an electric motor forrotating said hollow spindle the rotor of which is associated with anend portion of said spindle, the hollow spindle having an end projectingbeyond the motor upon which a yarn package may be mounted, means fordrawing a core through said spindle at a substantially uniform rate, acore guide located in close proximity to the delivery end of said hollowspindle, annular guideways adjacent the delivery end of the spindle andtravelers movable therearound for guiding yarn from a package on saidspindle onto a core at a point between said core guide and the deliveryend of said spindle, the saidfguideways being of relatively differentdiameter and one being rotatable with said spindle and the other beingnon-rotatable with respect thereto.

RAYMOND-E. GEI'CHELL.

